41.   Friday, undercover officers, some in suits, mixed with the crowd looking for drug sales.

42.   He also denied knowing that the package he delivered to the undercover officer contained methamphetamine.

43.   He downloaded child pornography from the Internet and sold it to an undercover officer at a swap meet.

44.   He said an undercover officer, wearing a hidden camera, gained membership by using a bogus note from a doctor, whose name authorities had made up.

45.   He is also shown kneeing the undercover officer in the groin and slapping him three times.

46.   He said the motion picture association contacted the Police Department, which dispatched an undercover officer to infiltrate the operation.

47.   His case illustrates the delicate predicament of undercover officers, who sometimes must break laws to gain the confidence of their colleagues.

48.   His mother must serve another eight years of a life sentence for selling drugs to an undercover officer.

49.   Housing police officers joke about how regular undercover officers not accustomed to the projects typically give themselves away by looking up at the roofs for dealers.

50.   However, cocaine, LSD, ecstasy, methamphetamine, hallucinogenic mushrooms, and prescription drugs like Adderall and Vicodin were also purchased by undercover officers.